CN109677651A - Weighing loader and control method - Google Patents
Weighing loader and control method Download PDFInfo
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- CN109677651A CN109677651A CN201710980637.5A CN201710980637A CN109677651A CN 109677651 A CN109677651 A CN 109677651A CN 201710980637 A CN201710980637 A CN 201710980637A CN 109677651 A CN109677651 A CN 109677651A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
- B65B3/28—Methods or devices for controlling the quantity of the material fed or filled by weighing
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Abstract
The present invention proposes a kind of Weighing loader and control method, and Weighing loader includes weighing pour-in controller, container, filling valve, cylinder, solenoid valve and pulsed drive module；The pulsed drive module is built in the weighing pour-in controller, the solenoid valve, which is built in or beyond the cylinder, to be placed in the cylinder and connect with the cylinder, the input terminal of the weighing pour-in controller is connect with one end of the container, the pulsed drive module is connect with the solenoid valve, one end of the filling valve is connect with the cylinder, and the other end of the filling valve and the other end of the container are oppositely arranged up and down；The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge whether to need output pulse signal.The present invention solves low, the at high cost problem of Weighing loader filling accuracy in the prior art.
Description
Technical field
The present invention relates to electro-mechanical arts more particularly to a kind of Weighing loader and control methods.
Background technique
Weighing loader in the prior art generally uses the loading component of number, when the weight in the container measured reaches
When to preset value, loading component digital signal controls the filling flow of solenoid-driven cylinder de-regulation to PLC, by PLC
Or it terminates filling.It, referring to Fig.1, can only be fixed with two since general Weighing loader uses double stroke cylinder
Flow value implementation is filling, so filling accuracy is affected by extraneous factor, filling accuracy is not high；And digital weighing member
Part price is very expensive, also increases additional cost as controller using PLC.
Summary of the invention
Based on problem above, the present invention proposes a kind of Weighing loader and control method, solves in the prior art
Weighing loader filling accuracy is low, problem at high cost.
The present invention proposes a kind of Weighing loader, comprising:
Weighing pour-in controller, container, filling valve, cylinder, solenoid valve and pulsed drive module；
The pulsed drive module is built in the weighing pour-in controller, and the solenoid valve is built in the cylinder
Or be placed outside the cylinder and connect with the cylinder, the input terminal of the weighing pour-in controller and one end of the container connect
It connects, the pulsed drive module is connect with the solenoid valve, and one end of the filling valve is connect with the cylinder, the filling valve
The other end and the container the other end up and down be oppositely arranged；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset
Judge whether to need output pulse signal, needs the pulse signal exported if then calculating the pulsed drive module and control institute
Pulsed drive module output pulse signal is stated, the solenoid valve is opened and closed according to the pulse signal received, the electromagnetism
The opening and closing of valve control the cylinder and execute expanding-contracting action, and the expanding-contracting action controls the aperture of the filling valve.
In addition, the weighing pour-in controller includes the weighing sensor, signal processor and main process task being sequentially connected electrically
Device；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset
Judge whether to need the output pulse signal include:
The weighing sensor obtains the weight of the container and weight is converted to weight electric signal, the signal processing
Weight electric signal is amplified and is sent to the primary processor by device, and the primary processor is calculated according to the weight electric signal after conversion
Weight change amount electric signal, and according to weight electric signal, weight change amount electric signal and or the parameter preset judge whether need
Want output pulse signal.
In addition, one end of the primary processor is electrically connected with the signal processor, the other end of the primary processor with
The pulsed drive module electrical connection；
It includes: that the primary processor calculates needs that the calculating pulsed drive module, which needs the pulse signal exported,
Pulse signal simultaneously controls the pulsed drive module output pulse signal.
In addition, the parameter preset includes at least the first preset threshold, the second preset threshold, maximum weight variable quantity, pre-
If variable quantity, default ratio and/or default aperture, second preset threshold are greater than first preset threshold.
In addition, the weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or it is pre-
Setting parameter judges whether to need the output pulse signal include:
If the weight of the container is greater than first preset threshold, it is described filling that judgement needs output pulse signal to make
Valve reduces aperture, enters smart filling mode by slightly filling mode；
If the weight of the container is greater than or equal to second preset threshold, judgement needs output pulse signal to make institute
Filling valve closing is stated, is stopped filling.
In addition, the weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or it is pre-
Setting parameter judges whether to need output pulse signal further include:
Before entering the smart filling mode, if the weight change amount repeatedly continuously acquired remains unchanged, described in judgement
The aperture of filling valve is maximum value, and weight change amount at this time is recorded as maximum weight variable quantity, and maximum weight is changed
Amount is assigned to the default variable quantity；
If the ratio of weight change amount and the default variable quantity is the default ratio, judgement needs to export pulse
Signal makes the aperture of the filling valve default aperture, into smart filling mode；
If the weight of the container is greater than or equal to second preset threshold, judge that output pulse signal makes the filling
It fills valve to close, stop filling.
In addition, the solenoid valve includes normally open solenoid valve and normally closed solenoid valve；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset
Judge whether to need output pulse signal further include:
If the weight change amount repeatedly continuously acquired remains unchanged, and the weight of the container is less than the described first default threshold
When value, then judgement needs output pulse signal, closes the normally closed solenoid valve or normally open solenoid valve, opens the normally open solenoid valve
Or normally closed solenoid valve, into constant filling mode；
When the weight of the container is greater than or equal to first preset threshold, it is gradually reduced the aperture of the filling valve
Until when the ratio of the weight change amount and the default variable quantity that obtain is the default ratio.
In addition, before the weight of the container is greater than or equal to first preset threshold and does not enter smart filling mode,
The calculating and output need the pulse signal that exports to include:
Difference between calculated weight variable quantity and the default variable quantity is controlled if difference is greater than the first preset difference value
It makes the pulsed drive module and enters standard-sized sheet control model, preset if difference is less than or equal to the first preset difference value and is greater than second
Difference then controls the pulsed drive module and enters PWM mode, if difference is less than or equal to the second preset difference value, controls
It makes the pulsed drive module and enters pulsed mode, wherein the first preset difference value is greater than the second preset difference value.
The present invention also proposes a kind of control method of Weighing loader, comprising:
The weight for obtaining the container, according to weight, weight change amount and or parameter preset judge whether to need to export arteries and veins
Rush signal；
If so, calculating and exporting the pulse signal for needing to export；
Solenoid valve in Weighing loader is opened and closed according to the pulse signal received, the unlatching of the solenoid valve
Expanding-contracting action, the filling in the expanding-contracting action control Weighing loader are executed with the cylinder closed in control Weighing loader
Fill the aperture of valve.
In addition, the parameter preset includes at least the first preset threshold, the second preset threshold, maximum weight variable quantity, pre-
If variable quantity, default ratio and/or default aperture, second preset threshold are greater than first preset threshold.
In addition, the weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or it is pre-
Setting parameter judges whether to need the output pulse signal include:
If the weight of the container is greater than first preset threshold, it is described filling that judgement needs output pulse signal to make
Valve reduces aperture, enters smart filling mode by slightly filling mode；
If the weight of the container is greater than or equal to second preset threshold, judgement needs output pulse signal to make institute
Filling valve closing is stated, is stopped filling.
In addition, the weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or it is pre-
Setting parameter judges whether to need output pulse signal further include:
Before entering the smart filling mode, if the weight change amount repeatedly continuously acquired remains unchanged, described in judgement
The aperture of filling valve is maximum value, and weight change amount at this time is recorded as maximum weight variable quantity, and maximum weight is changed
Amount is assigned to the default variable quantity；
If the ratio of weight change amount and the default variable quantity is the default ratio, judgement needs to export pulse
Signal makes the aperture of the filling valve default aperture, into smart filling mode；
If the weight of the container is greater than or equal to second preset threshold, judge that output pulse signal makes the filling
It fills valve to close, stop filling.
In addition, the solenoid valve includes normally open solenoid valve and normally closed solenoid valve；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset
Judge whether to need output pulse signal further include:
If the weight change amount repeatedly continuously acquired remains unchanged, and the weight of the container is less than the described first default threshold
When value, then judgement needs output pulse signal, closes the normally closed solenoid valve or normally open solenoid valve, opens the normally open solenoid valve
Or normally closed solenoid valve, into constant filling mode；
When the weight of the container is greater than or equal to first preset threshold, it is gradually reduced the aperture of the filling valve
Until when the ratio of the weight change amount and the default variable quantity that obtain is the default ratio.
In addition, before the weight of the container is greater than or equal to first preset threshold and does not enter smart filling mode,
The calculating and output need the pulse signal that exports to include:
Difference between calculated weight variable quantity and the default variable quantity, if difference is greater than the first preset difference value, into
Enter standard-sized sheet control model, if difference is less than or equal to the first preset difference value and is greater than the second preset difference value, enters pulsewidth modulation
Mode enters pulsed mode if difference is less than or equal to the second preset difference value, wherein the first preset difference value is greater than second
Preset difference value.
In addition, the method also includes every time when the weight of the container stops more than or equal to second preset threshold
When filling, filling error is calculated, second preset threshold is adjusted using adaptive algorithm according to error, makes filling error
It is smaller and smaller.
By using above-mentioned technical proposal, have the following beneficial effects:
The present invention, to solenoid valve, enables solenoid valve is high-frequency to be opened using pulsed drive module output pulse signal
It opens, cylinder movement is controlled by the unlatching of magnetic valve high frequency rate, cylinder movement controls the aperture of filling valve, realizes to filling flow
Stepless changing and smooth control, realize high-precision it is filling.Moreover, due to using pulsed drive module driving electricity in the present embodiment
It is outer by flow, temperature and PLC processing speed etc. not only to solve PLC control solenoid valve without using PLC for magnet valve
The problem of boundary's factor influences, also as save cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of Weighing loader in the prior art；
Fig. 2 is the connection figure for the Weighing loader that one embodiment provides in the present invention；
Fig. 3 is the connection figure for the Weighing loader that one embodiment provides in the present invention；
Fig. 4 is the flow chart for the Weighing loader course of work that one embodiment provides in the present invention；
Fig. 5 is the flow chart of the control method for the Weighing loader that one embodiment provides in the present invention.
Specific embodiment
Below in conjunction with specific embodiment and attached drawing, the present invention is further described in detail.It is only intended to explain in detail
Specific embodiments of the present invention are stated, any restrictions are not generated to the present invention, protection scope of the present invention is with claims
Subject to.
Referring to Fig. 2, the present invention proposes a kind of Weighing loader, comprising:
Weighing pour-in controller 10, container 20, filling valve 30, cylinder 40, solenoid valve 50 and pulsed drive module 60；
Pulsed drive module 60 is built in weighing pour-in controller 10, and solenoid valve 50 is built in or beyond cylinder 40 and is placed in
Cylinder 40 is simultaneously connect with cylinder 40, and the input terminal of weighing pour-in controller 10 is connect with one end of container 20, pulsed drive module
60 connect with solenoid valve 50, and one end of filling valve 30 is connect with cylinder 40, the other end of filling valve 30 and the other end of container 20
It is oppositely arranged up and down；
Weigh pour-in controller 10 obtain container 20 weight, according to weight, weight change amount and or parameter preset judge
Output pulse signal whether is needed, and controls 60 output pulse signal of pulsed drive module, if then calculating pulsed drive module
60 need the pulse signals that export, and solenoid valve 50 is opened and closed according to the pulse signal received, the unlatching of solenoid valve 50 and
It closes control cylinder 40 and executes expanding-contracting action, expanding-contracting action controls the aperture of filling valve 30.
It illustrates the Weighing loader course of work: obtaining the weight of container 20, for example the weight of container 20 is 500g,
Container 20 enters for filling liquid or lotion, compares 500g and preset first preset threshold 800g at this time, when container 20
When weight is less than 800g, the pulse signal that pulsed drive module 60 needs to export is calculated at this time, electromagnetism is controlled by pulse signal
The unlatching of valve 50, solenoid valve 50 control cylinder 40 and release cylinder rod, open filling valve 30, start to carry out into container 20 filling.
When the weight of container 20 is close to the second preset threshold such as 2000g, the pulse that pulsed drive module 60 needs to export is calculated at this time
Signal controls solenoid valve 50 by pulse signal, and solenoid valve 50 controls cylinder 40 and acts to reduce the aperture of filling valve 30,
Reduce the flow of filling valve 30, to realize high-precision filling.
50 high frequency of solenoid valve is enable to solenoid valve 50 using 60 output pulse signal of pulsed drive module in the present embodiment
Rate open, and controls cylinder 40 by the high-frequency unlatching of solenoid valve 50 and acts, 40 action control filling valve 30 of cylinder
Aperture realizes stepless changing and smooth control to filling flow, realizes that high-precision is filling.Moreover, due to adopting in the present embodiment
Not only solves PLC control solenoid valve by flow, temperature without using PLC with 60 drive magnetic valve of pulsed drive module
The problem of extraneous factors such as degree and PLC processing speed influence, also as save cost.
Referring to Fig. 3, in one of them embodiment, weighing pour-in controller 10 includes the weighing and sensing being sequentially connected electrically
Device 101, signal processor 102 and primary processor 103；
Weigh pour-in controller 10 obtain container 20 weight, according to weight, weight change amount and or parameter preset judge
The output pulse signal whether is needed to include:
Weighing sensor 101 obtains the weight of container 20 and weight is converted to weight electric signal, and signal processor 102 will
Weight electric signal amplifies and sends to primary processor 103, and primary processor 103 becomes according to the weight electric signal calculated weight after conversion
Change amount electric signal, and according to weight electric signal, weight change amount electric signal and or parameter preset judge whether to need to export pulse
Signal.
Weighing sensor 101 is integrated in weighing pour-in controller 10 by the present embodiment, and pulsed drive module 60 is also collected
At in weighing pour-in controller 10, to save space, weight is carried out to container 20 by selection weighing sensor 101
Detection, reduces cost.
In one of them embodiment, one end of primary processor 103 is electrically connected with signal processor 102, primary processor
103 other end is electrically connected with pulsed drive module 60；
Calculating pulsed drive module 60 to need the pulse signal exported includes: that primary processor 103 calculates the arteries and veins for needing to export
It rushes signal and controls 60 output pulse signal of pulsed drive module.
Pulsed drive module 60 is by three kinds of working methods: standard-sized sheet control model, PWM mode and pulsed mode,
Different modes is selected according to different weight and weight change amount.
In one of them embodiment, parameter preset includes at least the first preset threshold, the second preset threshold, maximum weight
It measures variable quantity, default variable quantity, default ratio and/or default aperture, the second preset threshold and is greater than the first preset threshold.
First preset threshold such as 400g presets the first preset threshold, the second preset threshold is for same container 20
Weight is compared.
Default variable quantity is the variable quantity such as 10g of pre-set weight.Default ratio is score, such as 1/2,1/3.It is default
Aperture is the aperture of pre-set filling valve 30, and the aperture for the same filling valve 30 obtained in real time compares.
In one of them embodiment, weighing pour-in controller 10 obtains the weight of container 20, is become according to weight, weight
Change amount and or parameter preset judge whether to need the output pulse signal include:
If the weight of container 20 is greater than the first preset threshold, judgement needs output pulse signal to open the reduction of filling valve 30
Degree, enters smart filling mode by slightly filling mode；
If the weight of container 20 is greater than or equal to the second preset threshold, judgement needs output pulse signal to make filling valve 30
It closes, stops filling.
Judged by the weight to container 20, different filling modes used to the container 20 in different filling stages,
It is filling quickly to carry out that thick filling mode is used when initial；When the weight of container 20 is greater than such as 2 kilograms of the first preset threshold, then
Start to reduce filling flow using smart filling mode, prevent liquid from splashing out；It is preset when the weight of container 20 is greater than or equal to second
Stop filling end this time filling movement at such as 3 kilograms of threshold value at this time.
In one of them embodiment, weighing pour-in controller 10 obtains the weight of container 20, is become according to weight, weight
Change amount and or parameter preset judge whether to need output pulse signal further include:
Before entering smart filling mode, if the weight change amount repeatedly continuously acquired remains unchanged, filling valve 30 is judged
Aperture be maximum value, and weight change amount at this time is recorded as maximum weight variable quantity, by maximum weight variable quantity assignment
To default variable quantity；
If the ratio of weight change amount and default variable quantity is default ratio, judgement needs output pulse signal to make to fill
The aperture for filling valve 30 is default aperture, into smart filling mode；
If the weight of container 20 is greater than or equal to the second preset threshold, judge that output pulse signal closes filling valve 30
It closes, stops filling.
By judging that weight change amount remains unchanged in the present embodiment, learn whether the aperture of filling valve 30 has been maximum
Value, when the aperture of filling valve 30 is maximum value, filling valve 30 is carried out filling at this time with maximum firm discharge；When detect weight
When the ratio for measuring variable quantity such as 10g and default variable quantity 50g is default ratio such as 1/5, then it is filling to judge that output pulse signal makes
The aperture of valve 30 is default aperture, reduces the aperture of filling valve 30, into smart filling mode；When the weight of container 20 is greater than or equal to
At such as 3 kilograms of the second preset threshold, stop filling, end this time filling movement at this time.Since each default variable quantity is pre-
It can not first obtain, so default variable quantity needs to obtain by the maximum weight variable quantity assignment in pouring process.
Referring to Fig. 4, pouring process is had been described in detail by one embodiment:
Step S401 starts；
Step S402 obtains the weight of container 20 first, is set as W, and calculates the weight change amount Δ G of front and back twice；
Step S403 judges W whether less than the first preset threshold A, if so, continuing step S403；If it is not, then into
Enter step S407；
Step S404, judges whether continuous multiple Δ G remain unchanged, if so, entering step S406；If it is not, then continuing
Carry out step S405；
Step S405, normally open solenoid valve and normally closed solenoid valve are fully open, and cylinder rod stretches out, and fill mode into thick；
Step S406, normally closed solenoid valve are closed, and are retained normally open solenoid valve and are opened, into smart filling mode；
Step S407 judges whether the weight of container 20 is greater than the first preset threshold A and less than the second preset threshold B, if
It is to enter step S408；If it is not, entering step S410；
Step S408 judges whether the ratio between Δ G and default variation delta Gmax is default ratio, such as Δ G=0.2
Δ Gmax, if so, S406 is entered step, if it is not, then entering step S409；
Step S409, control cylinder rod retraction, makes Δ G=0.2 Δ Gmax；
Step S410, normally open solenoid valve and normally closed solenoid valve are all closed, and cylinder rod is withdrawn, and are stopped filling；
Step S411, judges whether Δ G is equal to 0, if so, entering step S412, if it is not, then returning to step S401；
Step S412 calculates error, error difference between container 20 for the second preset threshold B and at this time；
Step S413 terminates.
In one of them embodiment, solenoid valve 50 includes normally open solenoid valve and normally closed solenoid valve；
Weigh pour-in controller 10 obtain container 20 weight, according to weight, weight change amount and or parameter preset judge
Whether output pulse signal is needed further include:
If the weight change amount repeatedly continuously acquired remains unchanged, and when the weight of container 20 is less than the first preset threshold,
Then judgement needs output pulse signal, closes normally closed solenoid valve or normally open solenoid valve, opens normally open solenoid valve or normally closed solenoid valve,
Into constant filling mode；
When the weight of container 20 is greater than or equal to the first preset threshold, the aperture of filling valve 30 is gradually reduced until obtaining
Weight change amount and the ratio of default variable quantity when being default ratio until.
Control filling valves 30 by two solenoid valves 50, make to control that precision is higher, realize filling flow stepless changing and
It is filling to reach high-precision for smooth control.
In one of them embodiment, when the weight of container 20 is greater than or equal to the first preset threshold and does not enter smart filling
Before mode, calculating and export the pulse signal that needs export includes:
Difference between calculated weight variable quantity and default variable quantity controls arteries and veins if difference is greater than the first preset difference value
It rushes drive module 60 and enters standard-sized sheet control model, if difference is less than or equal to the first preset difference value and is greater than the second preset difference value,
It then controls pulsed drive module 60 and controls pulse if difference is less than or equal to the second preset difference value into PWM mode
Drive module 60 enters pulsed mode, wherein the first preset difference value is greater than the second preset difference value.
By to this mistake before the weight of container 20 is greater than or equal to the first preset threshold and does not enter smart filling mode
Cheng Jinhang precise controlling improves filling control precision to realize to filling smooth control.First preset difference value such as 50,
Second preset difference value such as 5.
Referring to Fig. 5, the present invention also proposes a kind of control method of Weighing loader, comprising:
Step S501 obtains the weight of container, according to weight, weight change amount and or parameter preset judge whether needs
Output pulse signal；
Step S502, if so, calculating and exporting the pulse signal for needing to export；
Step S503, the solenoid valve in Weighing loader are opened and closed according to the pulse signal received, solenoid valve
Opening and closing control Weighing loader in cylinder execute expanding-contracting action, expanding-contracting action control Weighing loader in
The aperture of filling valve.
In one of them embodiment, parameter preset includes at least the first preset threshold, the second preset threshold, maximum weight
It measures variable quantity, default variable quantity, default ratio and/or default aperture, the second preset threshold and is greater than the first preset threshold.First is pre-
If threshold value such as 400g, the first preset threshold is preset, the second preset threshold is in order to which the weight of same container 20 is compared.
Default variable quantity is the variable quantity such as 10g of pre-set weight.Default ratio is score, such as 1/2,1/3.It is default
Aperture is the aperture of pre-set filling valve 30, and the aperture for the same filling valve 30 obtained in real time compares.
In one of them embodiment, weighing pour-in controller obtains the weight of container, according to weight, weight change amount
With or parameter preset judge whether to need the output pulse signal include:
If the weight of container is greater than the first preset threshold, judgement needs output pulse signal that filling valve is made to reduce aperture,
Enter smart filling mode by slightly filling mode；
If the weight of container is greater than or equal to the second preset threshold, judgement needs output pulse signal to close filling valve
It closes, stops filling.
In one of them embodiment, weighing pour-in controller obtains the weight of container, according to weight, weight change amount
With or parameter preset judge whether to need output pulse signal further include:
Before entering smart filling mode, if the weight change amount repeatedly continuously acquired remains unchanged, filling valve is judged
Aperture is maximum value, and weight change amount at this time is recorded as maximum weight variable quantity, and maximum weight variable quantity is assigned to
Default variable quantity；
If the ratio of weight change amount and default variable quantity is default ratio, judgement needs output pulse signal to make to fill
The aperture for filling valve is default aperture, into smart filling mode；
If the weight of container is greater than or equal to the second preset threshold, judges that output pulse signal closes filling valve, stop
It is only filling.
In one of them embodiment, solenoid valve includes normally open solenoid valve and normally closed solenoid valve；
Weigh pour-in controller obtain container weight, according to weight, weight change amount and or parameter preset judge whether
Need output pulse signal further include:
If the weight change amount repeatedly continuously acquired remains unchanged, and when the weight of container is less than the first preset threshold, then
Judgement needs output pulse signal, closes normally closed solenoid valve or normally open solenoid valve, opens normally open solenoid valve or normally closed solenoid valve, into
Enter constant filling mode；
When the weight of container is greater than or equal to the first preset threshold, the aperture of filling valve is gradually reduced until the weight obtained
Until when measuring the ratio of variable quantity and default variable quantity to preset ratio.
In one of them embodiment, mould is filled when the weight of container is greater than or equal to the first preset threshold and does not enter essence
Before formula, calculating and export the pulse signal that needs export includes:
Difference between calculated weight variable quantity and default variable quantity enters complete if difference is greater than the first preset difference value
Control model is opened, if difference is less than or equal to the first preset difference value and is greater than the second preset difference value, enters PWM mode,
If difference is less than or equal to the second preset difference value, enter pulsed mode, is preset wherein the first preset difference value is greater than second
Difference.
In one of them embodiment, method further includes every time when the weight of container is greater than or equal to the second preset threshold
When stopping filling, filling error is calculated, the second preset threshold is adjusted using adaptive algorithm according to error, makes filling error
It is smaller and smaller.It is gradually reduced error by adaptive algorithm, improves filling accuracy.
Above-described is only the principle of the present invention and preferred embodiment.It should be pointed out that for the common skill of this field
For art personnel, on the basis of the principle of the invention, several other modifications can also be made, also should be regarded as protection model of the invention
It encloses.
Claims (15)
1. a kind of Weighing loader characterized by comprising
Weighing pour-in controller, container, filling valve, cylinder, solenoid valve and pulsed drive module；
The pulsed drive module is built in the weighing pour-in controller, and the solenoid valve is built in or beyond the cylinder
It being placed in the cylinder and is connect with the cylinder, the input terminal of the weighing pour-in controller is connect with one end of the container,
The pulsed drive module is connect with the solenoid valve, and one end of the filling valve is connect with the cylinder, the filling valve
The other end of the other end and the container is oppositely arranged up and down；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
Whether output pulse signal is needed, needs the pulse signal exported if then calculating the pulsed drive module and control the arteries and veins
Drive module output pulse signal is rushed, the solenoid valve is opened and closed according to the pulse signal received, the solenoid valve
It opens and closes and controls the cylinder execution expanding-contracting action, the expanding-contracting action controls the aperture of the filling valve.
2. Weighing loader according to claim 1, which is characterized in that
The weighing pour-in controller includes the weighing sensor, signal processor and primary processor being sequentially connected electrically；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
The output pulse signal whether is needed to include:
The weighing sensor obtains the weight of the container and weight is converted to weight electric signal, and the signal processor will
Weight electric signal amplifies and sends to the primary processor, and the primary processor is according to the weight electric signal calculated weight after conversion
Variable quantity electric signal, and according to weight electric signal, weight change amount electric signal and or the parameter preset judge whether to need it is defeated
Pulse signal out.
3. Weighing loader according to claim 2, which is characterized in that
One end of the primary processor is electrically connected with the signal processor, and the other end of the primary processor and the pulse are driven
The electrical connection of dynamic model block；
It is described to calculate the pulse that the pulse signal that the pulsed drive module needs export includes: the primary processor calculating needs
Signal simultaneously controls the pulsed drive module output pulse signal.
4. Weighing loader according to any one of claims 1 to 3, which is characterized in that
The parameter preset include at least the first preset threshold, the second preset threshold, maximum weight variable quantity, default variable quantity,
Default ratio and/or default aperture, second preset threshold are greater than first preset threshold.
5. Weighing loader according to claim 4, which is characterized in that
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
The output pulse signal whether is needed to include:
If the weight of the container is greater than first preset threshold, judgement needs output pulse signal to subtract the filling valve
Small guide vane enters smart filling mode by slightly filling mode；
If the weight of the container is greater than or equal to second preset threshold, judgement needs output pulse signal to make the filling
It fills valve to close, stop filling.
6. Weighing loader according to claim 4, which is characterized in that
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
Whether output pulse signal is needed further include:
Before entering the smart filling mode, if the weight change amount repeatedly continuously acquired remains unchanged, judge described filling
The aperture of valve is maximum value, and weight change amount at this time is recorded as maximum weight variable quantity, and maximum weight variable quantity is assigned
It is worth to the default variable quantity；
If the ratio of weight change amount and the default variable quantity is the default ratio, judgement needs output pulse signal
Make the aperture of the filling valve default aperture, into smart filling mode；
If the weight of the container is greater than or equal to second preset threshold, judge that output pulse signal makes the filling valve
It closes, stops filling.
7. Weighing loader according to claim 6, which is characterized in that
The solenoid valve includes normally open solenoid valve and normally closed solenoid valve；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
Whether output pulse signal is needed further include:
If the weight change amount repeatedly continuously acquired remains unchanged, and the weight of the container is less than first preset threshold
When, then judgement need output pulse signal, close the normally closed solenoid valve or normally open solenoid valve, open the normally open solenoid valve or
Normally closed solenoid valve, into constant filling mode；
When the weight of the container be greater than or equal to first preset threshold when, be gradually reduced the filling valve aperture until
Until when the ratio of the weight change amount of acquisition and the default variable quantity is the default ratio.
8. the control method of Weighing loader according to claim 6, which is characterized in that
When the weight of the container is greater than or equal to first preset threshold and before not entering smart filling mode, the calculating and
Exporting the pulse signal that needs export includes:
Difference between calculated weight variable quantity and the default variable quantity controls institute if difference is greater than the first preset difference value
It states pulsed drive module and enters standard-sized sheet control model, if difference is less than or equal to the first preset difference value and default poor greater than second
Value, then control the pulsed drive module and enter PWM mode, if difference is less than or equal to the second preset difference value, controls
The pulsed drive module enters pulsed mode, wherein the first preset difference value is greater than the second preset difference value.
9. a kind of control method of Weighing loader characterized by comprising
The weight for obtaining the container, according to weight, weight change amount and or parameter preset judge whether to need to export pulse letter
Number；
If so, calculating and exporting the pulse signal for needing to export；
Solenoid valve in Weighing loader is opened and closed according to the pulse signal received, the unlatching of the solenoid valve and pass
The cylinder closed in control Weighing loader executes expanding-contracting action, the filling valve in the expanding-contracting action control Weighing loader
Aperture.
10. the control method of Weighing loader according to claim 9, which is characterized in that the parameter preset is at least
Including the first preset threshold, the second preset threshold, maximum weight variable quantity, default variable quantity, presets ratio and/or preset and open
Degree, second preset threshold are greater than first preset threshold.
11. the control method of Weighing loader according to claim 10, which is characterized in that the weighing filling control
Device obtains the weight of the container, according to weight, weight change amount and or parameter preset judge whether to need output pulse signal
Include:
If the weight of the container is greater than first preset threshold, judgement needs output pulse signal to subtract the filling valve
Small guide vane enters smart filling mode by slightly filling mode；
If the weight of the container is greater than or equal to second preset threshold, judgement needs output pulse signal to make the filling
It fills valve to close, stop filling.
12. the control method of Weighing loader according to claim 10, which is characterized in that
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
Whether output pulse signal is needed further include:
Before entering the smart filling mode, if the weight change amount repeatedly continuously acquired remains unchanged, judge described filling
The aperture of valve is maximum value, and weight change amount at this time is recorded as maximum weight variable quantity, and maximum weight variable quantity is assigned
It is worth to the default variable quantity；
If the ratio of weight change amount and the default variable quantity is the default ratio, judgement needs output pulse signal
Make the aperture of the filling valve default aperture, into smart filling mode；
If the weight of the container is greater than or equal to second preset threshold, judge that output pulse signal makes the filling valve
It closes, stops filling.
13. the control method of Weighing loader according to claim 12, which is characterized in that
The solenoid valve includes normally open solenoid valve and normally closed solenoid valve；
The weighing pour-in controller obtains the weight of the container, according to weight, weight change amount and or parameter preset judge
Whether output pulse signal is needed further include:
If the weight change amount repeatedly continuously acquired remains unchanged, and the weight of the container is less than first preset threshold
When, then judgement need output pulse signal, close the normally closed solenoid valve or normally open solenoid valve, open the normally open solenoid valve or
Normally closed solenoid valve, into constant filling mode；
When the weight of the container be greater than or equal to first preset threshold when, be gradually reduced the filling valve aperture until
Until when the ratio of the weight change amount of acquisition and the default variable quantity is the default ratio.
14. the control method of Weighing loader according to claim 12, which is characterized in that
When the weight of the container is greater than or equal to first preset threshold and before not entering smart filling mode, the calculating and
Exporting the pulse signal that needs export includes:
Difference between calculated weight variable quantity and the default variable quantity enters complete if difference is greater than the first preset difference value
Control model is opened, if difference is less than or equal to the first preset difference value and is greater than the second preset difference value, enters PWM mode,
If difference is less than or equal to the second preset difference value, enter pulsed mode, is preset wherein the first preset difference value is greater than second
Difference.
15. the control method of Weighing loader according to any one of claims 10 to 14, which is characterized in that
The method also includes when the weight of the container, which is greater than or equal to second preset threshold, stops filling, counting every time
Filling error adjusts second preset threshold using adaptive algorithm according to error, keeps filling error smaller and smaller.
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| CN114326575A (en) * | 2021-12-29 | 2022-04-12 | 苏州德凌迅动力科技有限公司 | Batch glue filling method for irregular battery packs |
| CN114789984A (en) * | 2021-01-26 | 2022-07-26 | Smc(中国)有限公司 | Automatic filling control method, storage medium and system |
| CN114789984B (en) * | 2021-01-26 | 2024-07-09 | Smc(中国)有限公司 | Automatic filling control method, storage medium and system |
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